I posted this bounty a few years ago, it appears it was removed.
My original bounty was far more detailed, with attempted humor littered within. This iteration
is much shorter than the original bounty post.
Several years ago 18 player zombies was shown as possible,
although borderline unplayable due to the nature of the zombie spawn system.
However, As i said in my previously posted bounty
The History that can be made shan't be held back by a mere science.
The mode can be unplayable, and it will still be a massive landmark to zombies history.